SATA - System Freezes

Robin Laing Robin.Laing at drdc-rddc.gc.ca
Mon Jun 23 15:13:54 UTC 2008


Henry Ritzlmayr wrote:
> Am Freitag, den 20.06.2008, 09:37 -0600 schrieb Robin Laing:
>> Henry Ritzlmayr wrote:
>>> Am Donnerstag, den 19.06.2008, 09:52 -0600 schrieb Robin Laing:
>>>> Henry Ritzlmayr wrote:
>>>>> Am Dienstag, den 17.06.2008, 13:25 -0400 schrieb Jorge Fábregas:
>>>>>> Hello Everyone,
>>>>>>
>>>>>> I'm running Fedora 8 and my system freezes (for about 20 to 40 seconds) a 
>>>>>> couple of times a day. When it does I see this on /var/log/messages:

>> I have looked at how lmsensors works and you can make some changes to 
>> the configuration files to increase the accuracy of the reports.  I have 
>> not played with it much though.  It is just as easy to pull the cover 
>> and measure the voltages with a volt meter.
> 
> I will try lmsensors and see what it can do here. If this works out,
> than my initial questions stands: Could such an info be included in the
> kernel output. Maybe not (by design) but a question can´t hurt. We do
> development within SAP here at our company, and for special cases, when
> something fails, we don´t only throw a error message to the user. We try
> to retrieve as much information from the underlying OS/DB as much as
> possible to help for later debugging or at least being more informative
> in the message we display to the user. 
> 

My point is lmsensors is only as accurate as the sensor configuration 
file.  In my case, lmsensors didn't report a problem but when I used a 
digital voltmeter, my power supply was low, even after being removed 
from the system.  lmsensors was showing a .5 volt difference.

> 
>> I have two of the same brand of power supply's (only ones available in 
>> our area) with exactly the same fault.  A known fault that can be fixed 
>> with the addition of three variable resistors.
> 
> Don´t get me wrong here, but this is not something I would like to see
> in one of my systems here. I could imagine the first response from one
> of our managers if anything fails (even if it is only a web page which
> is not displayed properly) that this must be due to the newly installed
> resistors ;-)
> 
> Henry 

I have seen an adapter that fits into a case that gives you a selectable 
display that has voltages and temperatures.  This may be useful if you 
can find it.

-- 
Robin Laing





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